/*
 * Copyright 2012 Jeff Hain
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package net.jodk.threading.ringbuffers;

/**
 * Handles rejected events by throwing RejectedEventException.
 */
public class AbortingRingBufferRejectedEventHandler implements InterfaceRingBufferRejectedEventHandler {

    //--------------------------------------------------------------------------
    // MEMBERS
    //--------------------------------------------------------------------------
    
    private final int maxNbrOfRanges;
    
    //--------------------------------------------------------------------------
    // PUBLIC METHODS
    //--------------------------------------------------------------------------

    /**
     * Creates a handled that indicates all rejected ranges.
     */
    public AbortingRingBufferRejectedEventHandler() {
        this(Integer.MAX_VALUE);
    }

    /**
     * @param maxNbrOfRanges Max number of rejected ranges indicated
     *        in the exception, to avoid huge logs.
     */
    public AbortingRingBufferRejectedEventHandler(int maxNbrOfRanges) {
        if (maxNbrOfRanges < 0) {
            throw new IllegalArgumentException();
        }
        this.maxNbrOfRanges = maxNbrOfRanges;
    }
    
    @Override
    public void onRejectedEvents(
            final InterfaceRingBuffer ringBuffer,
            final long... sequencesRanges) {
        StringBuilder sb = new StringBuilder();
        sb.append("rejected from ");
        sb.append(ringBuffer);
        sb.append(" : ");
        RingBuffersUtils.appendStringSequencesRanges(sb, this.maxNbrOfRanges, sequencesRanges);
        throw new RejectedEventException(sb.toString());
    }
}
